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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int n, k;
  5. int a[10];
  6. int use[10];
  7. void go(int depth) {
  8.   if (k == depth) {
  9.     for (int i = 0; i < k; i++) cout << a[i] << " ";
  10.     cout << '\n';
  11.   }
  12.  
  13.   for (int i = 1; i <= n; i++) {
  14.     if (use[i] >= k) continue;
  15.     a[depth] = i;
  16.     use[i]++;
  17.     go(depth + 1);
  18.     use[i]--;
  19.   }
  20. }
  21. int main() {
  22.   ios_base::sync_with_stdio(0);
  23.   cin.tie(0);
  24.   cin >> n >> k;
  25.  
  26.   go(0);
  27. }
Success #stdin #stdout 0s 5300KB
comments (?)
stdin 
5 3
stdout 
1 1 1
https://ideone.com/mOGGKD
language:
C++14 (gcc 8.3)
created:
13 days ago
visibility:
public

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